.. _program_listing_file_src_mcp230xx.cpp:

Program Listing for File mcp230xx.cpp
=====================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_mcp230xx.cpp>` (``src/mcp230xx.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include "mcp230xx/mcp230xx.hh"
   
   using iplo::MCP230XX;
   
   bool MCP230XX::writeRegister(std::uint8_t reg, std::uint8_t value) {
       const auto res = _bus.writeByteData(reg, value);
       if (res < 0) {
           _error = I2C_ERROR;
           return false;
       }
   
       _error = OK;
       return true;
   }
   
   std::uint8_t MCP230XX::readRegister(std::uint8_t reg) {
       const auto res = _bus.readByteData(reg);
       if (res < 0) {
           _error = I2C_ERROR;
           return 0;
       }
   
       _error = OK;
       return res;
   }
   
   int MCP230XX::lastError() {
       int e = _error;
       _error = OK;
       return e;
   }